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DOI: | 10.1094/PHYTO-104-11-S3.1 |
Web URL(s): | http://apsjournals.apsnet.org/doi/pdf/10.1094/PHYTO-104-11-S3.1#page=98 Last checked: 12/01/2014 Requires: PDF Reader Notes: Item is within a single large file |
Publication Type:
| Report |
Content Type: | Abstract or Summary only |
Author(s): | Rioux, R. |
Author Affiliation: | NewLeaf Symbiotics, St. Louis, MO |
Title: | Potential role of oxalic acid in pathogenicity of Sclerotinia homoeocarpa on creeping bentgrass and various model hosts |
Section: | 2014 APS-CPS Joint Meeting abstracts of presentations Other records with the "2014 APS-CPS Joint Meeting abstracts of presentations" Section
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Meeting Info.: | Minneapolis, Minnesota: August 9-13, 2014 |
Source: | Phytopathology. Vol. 104, No. 11S, November 2014, p. S3.98. |
Publishing Information: | Lancaster, Pennsylvania: The Society Intelligencer Printing Company for The American Phytopathological Society |
# of Pages: | 1 |
Keywords: | TIC Keywords: Agrostis stolonifera; Disease control; Disease evaluation; Dollar spot; Fungus infection; Oxalic acid; Pathogenicity; Sclerotinia homoeocarpa
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Abstract/Contents: | "The fungal pathogen Sclerotinia homoeocarpa causes dollar spot, one of the primary diseases of amenity turfgrasses worldwide. S. homoeocarpa produces oxalic acid in vitro but it is not known if this phytotoxin is important for successful host infection by S. homoeocarpa. In the present research, whole plant infection assays were used to investigate the role of oxalic acid in pathogenesis of S. homoeocarpa on creeping bentgrass and various models hosts. Similar symptom severity was observed on all hosts but the relationship between symptom severity and oxalate content varied widely. Surprisingly, oxalate content was more related to symptom severity in hosts with low, as opposed to high, endogenous oxalate content. Time-course studies were used to compare the importance of oxalic acid for infection of creeping bentgrass and Brachypodium distachyon-hosts with low and high oxalate content, respectively-by S. homoeocarpa. These experiments revealed that oxalate content explained 75% of variability in symptom severity for creeping bentgrass but only 28% in B. distachyon. Moreover, an isolate of S. homoeocarpa with low in vitro oxalic acid production was less aggressive on creeping bentgrass but not on B. distachyon. Together, these results indicate that both host endogenous oxalate level and S. homoeocarpa-produced oxalic acid are important for pathogenicity of S. homoeocarpa." |
Language: | English |
References: | 0 |
Note: | This item is an abstract only! |
| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete): Rioux, R. 2014. Potential role of oxalic acid in pathogenicity of Sclerotinia homoeocarpa on creeping bentgrass and various model hosts. Phytopathology. 104(11S):p. S3.98. |
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| DOI: 10.1094/PHYTO-104-11-S3.1 |
| Web URL(s): http://apsjournals.apsnet.org/doi/pdf/10.1094/PHYTO-104-11-S3.1#page=98 Last checked: 12/01/2014 Requires: PDF Reader Notes: Item is within a single large file |
| MSU catalog number: b2219736a |
| Find from within TIC: Digitally in TIC by file name: phytp2014novpres |
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